Music-leaf turner.



T. P. ARSNEAU.

MUSIC-LEAF TURNER.

APPLICATION FILED JULY 8. 1915.

1 ,27 1,829. Patented July 9, 1918.

Q Y k "a m V5 TO]? Thomas P/lrsnmu m: mums FEYERS co manna-ma.WASHINGTON. n. c.

- to return the leaves UNITED STATES PATENT OFFICE.

THOMAS P. ARSNEAU, OF PORTLAND, OREGON.

MUSIC-LEAF TURNER.

Application filed July 8, 1915.

To all "whom it may concern:

Be it known that I, Tnonas P. Ansnnau, a citizen of the United States,and a resident of the city of Portland, county of Multnomah, State ofOregon, have invented a new and useful Improvement in Music-LeafTurners, of which the following is a specification.

This invention relates to devices for mechanically turning the sheets ofa piece of music,- and is adapted for use in connection with any type ofmusical instrument which requires a stand for holding music.

One of the main objects of my invention, is to provide a device of thischaracter, which may be operated by the depression of afoot treadle, andthereby relieve the operator from the necessity of using the hands inoperating this device.

Another of the main objects of myinvention, is to provide a device whichwill operate, not only to turn the leaves consecutively in onedirection, but which will also operate sothat the music may be repeated.V

Another of the main objects of my invention, is to provide a mechanicalmusic turner which will be simple in operation and construction, andpositive inaction.

I have so arranged my device that the leaves of the piece of music arefirmly gripped by spring clips. These spring clips are mounted on theouter ends of lever arms, and I connect these lever arms by a series ofbell-cranks and links to a foot treadle, successive depressions of whichwill operate so as to consecutively turn the sheets one at a time, inone direction and the further depression of the foot treadle willsimultaneously return all parts to their normal positions, so that themusic may be repeated if desired.

In the accompanying drawings, I have shown my invention used inconnection with a substantial music rack of a type ordinarily used inorchestra pits. However, it is to be construed that the invention may beused in connection with any other type of music stand. In thesedrawings:

Figure l is a front elevation of a music stand showing my inventionincorporated therewith.

Fig. 2 is a left side elevation of the same.

Fig. 3 is a development of the cylinder cam which permits the successfuloperation of the music turner; and Fig. 4 a diagram- Specification ofLetters Patent.

' lever arms Patented July 9, 1918. Serial No. 38,787.

matic plan view showing the mechanical connection between the leafturning arm and the operating connections thereto.

A standard a is mounted on the base Z), and is provided at its upper endwith an inclined face plate 0, which acts as a support for the musicturning device. On the rear of the face 0, are fixed the guide staples(Z. A bracket 0, is provided with longitudinally extending arms 7",which are adapted to be removably supported in the guide staples a). Thebracket c is made with a lateral flange 9, and an extending arm 7a. Apendant pivot post 2' is rigidly mounted in the flange 5/, and said postis provided with a collar A plurality of lever arms 7c, 72 and 71-. arepivoted on the post i above the collar j, said bearing on their outerextremities spring clips Z, which are adapted to grip the sheets of thepiece of music.

A stop arm on limits the throw of the lever arms when the latter arerocked to the left, having reference to Fig. 1. Pivotally mounted on thebracket arm 7t are the bell cranks a, n and a and these bell cranks arerespectively connected by links 0, 0 and 0 to the corresponding arms 7c,70 and 70 @n the base 6 of the music stand mounted rotatably are bearingarms Z) in which r0- tates a cylinder cam 79. This cylinder cam hasfixed on one end, a. pinion q, meshing with and driven by a gear 1, thelatter being rotatably mounted on a shaft 1* in a bearing 1. A ratchetgear 5 is also mounted on the shaft r. A foot treadle 2, is looselyjournaled on the shaft r, adjacent the ratchet s. Said treadle isprovided with a spring pawl 2?, adapted to engage with the teeth of theratchet s, so that when said treadle is depressed, the pawl andtherewith the ratchet s and the gear 1 will be ro ated in a clockwisedirection, having reference to Fig. 2. This movement will cause acounter clockwise rotation of the cam cylinder 79, and the gearingconnections between the shaft r and the cam cylinder 79 are so figured,that a single depression of the foot treadle 25', will cause a quarterrevolution of the cam cylinder 79.

The foot treadle t is provided with a rear arm 25 extending through aslot 25 in the standard a, and a spring normally holds the treadle inthe position shown in Fig. 2. A cross arm 1), which is an integral partof the bearing arms 6, has pivoted thereon bell cranks w, w and w whichare con nected by links at, as and m to the bell cranks a, n and arespectively. The cam cylinder p is provided with the three cam groovesy, y and 2 as shown in Figs. 1 and 3. The bell cranks w, w and w areeach provided on one arm with cam rolls (not shown) which travel in thegrooves y, y and 1 respectively. These grooves are so formed that inbeginning a cycle of operation, the first depression of the foot treadlewill cause the bell crank w and thus the bell crank and the arm is to bethrown over, thereby turning the first sheet of the piece of music. Thenext depression of the bell crank t will rock the bell crank w andtherewith the bell crank a and the arm 10 so as to turn the second sheetof music. The third depression of the foot treadle will rock the bellcrank 10 and therewith the bell crank n and the arm 76 so as to turn thethird sheet. The fourth depression of the foot treadle will cause allbell cranks w, w and 10 to be simultaneously returned to their initialpositions, which action will cause all three arms la, is and k to beturned so that the continued operation of the foot treadle will causethis cycle of action to be repeated. In actual use, the music is placedin the position shown by the broken lines a. The center of the sheet isengaged by the pendant pivot post i, and the spring clips Z hold thesheets in convenient position for use.

In these drawings, the device is shown as designed for use in turningthree pages of music, but by increasing or decreasing the number of unitparts thereto, the device can be used for consecutively turning andsimultaneously returning any number of sheets.

I claim:

1. In a music leaf turner, the combination of a pivot post, a pluralityof leaf turning arms pivotally supported thereby, a rotatable cylinderprovided on its periphery with a plurality of continuous cam elements,said cam elements having portions to operate the leaf turning arms inone direction and portions to operate the leaf turning arms in theopposite direction, the portions of the respective cam elements foroperating the arms in the first mentioned direction being arranged onein advance of the other, connections between the cams and the leafturning arms, and means for intermittently rotating the cylinder tocause the cam portions to first successively turn the leaf turning armsin one direction and subsequently return all said arms to normalposition.

2. In a music leaf turner, the combination of a plurality of pivotallymounted leaf turning arms, a cylinder provided on its periphery with aplurality of continuous cam elements having portions disposed one inadvance of the other and offset, and other cam portions on saidcontinuous cam elements arranged in transverse alinement, connectionsbetween the cylinder and the leaf turning arms, and pedal operated meansfor intermlttently rotating the cylinder.

3. In a music leaf turner, the combination of a pivot post, leaf turninarms pivotally supported thereby, pivotal y mounted bell crank leversconnected to the leaf turning arms, longitudinally movable rods pivotedto the bell crank levers, a cylinder having a pluralityof continuous camelements having portions disposed one in advance of the other andofiset, and other cam portions on said continuous cam elements arrangedintransverse alinement, bell crank levers between the cam portions andthe lower ends of the longitudinal rods, and pedal operated means forintermittently rotating the cylinder to cause the cam portions inadvance of the other and offset to successively turn the leaf turningarms in one direction, and the transverse alined cam portion tosubsequently reverse the movement of the leaf turning arms and returnsame to normal position.

THOMAS P. ARSNEAU.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G."

